Joseph van ruymbeke



p cent. 4 0

" ii'rn'rns JOSEPH VAN UY BEKE, or CHICAGO, ILLINOIS, ASSIGNOR TO THENATIONAL CHEMICAL AND FERTILIZER COMPANY. or SAME PLACE.

PHOSPHATIC FERTILIZER."

SPECIFICATION forming part of Letters PatentNo. 453,749, dated June 9,1893,. Application filed June 20, 1890. Serial No 356,136; (Nospecimens.)

.To all whom it vita-y concern:

Be it known that I, JOSEPH VAN RUYM- BEKE, a subject of the King ofBelgium, residing at Chicago, in the county of Cook and State ofIllinois, have invent-eda' certain new and useful Improvement inPhosphatic Fer.

plished by erasing the natural]phosphates with an adequate proportion ofsulphuric acid, wherebyin the case of iron andalumina phosphatessulphates of iron and alumina are produced along with phosphoric acid.It is well known that stick is produced by concentrating tank-water,which has been separated from the solid matter in suspension, whichsolid matter is known as tankagc. Tank-water is obtained by therendering of meats, fish, and otherfatty matter, and contains theextract of these substances and the gelatinous material resulting fromthe prolonged action of water upon the muscle, cartiiege, and bone ofthe material treated. The solution is' first mechanically separatedfrom, the said solids in suspension, and this solution is what is knownas tank-water. This solution while still hot is then evaporated to atleast 22 Baum. known-as stick, and is viscid and deliques- The entireoperation must be performed without permitting the liquid to cool, inorder to prevent decomposition, for fermentation sets in almostimmediately upon the liquid becoming cool. If the solid matter insuspene. I

is not so arated from the solution and the two toget or are partiallydried, so as to contain not more than fiftyper cent. of water, theproduct will be only vo cause the tanknge is aheo utely non-visoid andnon deliqueucent; and this solid matter,callod The product is whatiswhich is known as tankage,

slightly sticky, be-

tankagej? is generally in the proportion of about tlireeto one to thematterheldin solution. Therefore a treatment adapted to the tankageproduct would not necessarilybe adapted to the curing of stick, onaccount of thhdifferent 118; ture of the two substances mentioned above.

Furthermore, stick prepared as above ex plained can be kept almostindefinitely with out undergoing any decomposition and consequent lossof nitrogen. On the other hand, the taukage mixture mentioned above,evaporated to about fifty per centhof water, will putref y rapidly, thisprocess, in fact, commenc-. ing as soon as it is cooled 01f; but theproduct resulting frointhe treatment-"of phosphates with sulphuric acid,as mentioned above, is also sticky and deliquescent, as well as thestick itself.

I have heretofore discovered, as set forth in my patent, No. 367,732,dated August 2, 1887,

that stick is best cured by soluble salts of iron,

and alumina, especially if they are slightly basic.

My present invention consists in the appli cation of this discovery bycombining the two sticky deliquesccnt substances mentioned above withcarbonate of lime to form a fertilizer. This compound will be rich bothin soluble phosphoric acid derived from the iron 1 and aluminaphosphates and rived from the stick.

In carrying out my invention to produce this compound I first treat thenatural phosphate rock with sulphuric acid in the usual way, therebyobtaining a product containing the sulphate of iron and alumina andphosin nitrogen dephoric acid. I submit this product in mass,

to a high degree of heat, as set forth in my prior application, SerialNo. 325,795, whereby this acid phosphate is trausformedinto ametaphosphate with some sulphate of iron and sulphate of alumina, asexplained in my said application, This iron and alumina metaphosphate ispulverizethand to the powdered substance I add and thoroughly mixtherewith stick with which there has been mixed previously about fifteenper cent. of carbonate of lime. The addition of carbonate of lime as aningredient is to produce basic sulphates of iron dr alumina, which aremore red energetic in their action on stick than the acid sulphates. Themass, when thoroughly mixed, becomes in av few hours completelygranulated and apparently dry-,so as to be in a marketable condition. Itis obvious that the proportions of the two elements-acidifi'ed rock andstick loaded with carbonate'or 1ime-may be yaried within large limits aslong assuffieient sulphates of iron or alumina are-present to curethestick, and even an on cess of these salts is not injurious. A. goodcompound'will be obtained by using about two thousand pounds ofacidified rock with eight hundred pounds stick at about 2e? Baum, loadedwith about fifteen per cent.

1 of carbonate oi lime. These proportions are I not arbitrary, itbeingneoessary only, that there shall be added to the stick a'sdfficientquantity of the acidified rock to thoroughly cure the former by'means ofthe sulphates contained therein, andthis may be determined bycalculation based-on analysis of the elements or by observation of thechange efiected in mixing the elements together; The amount of carbonateof lime to be mixedwith the stick may be varied also, for it is s mewhatproportionate 'tothe amount of sulphates with which the stick is to bemixed. It must al- .Waysbe insuffieient in quantity to produce any oxidein excess 01' What canbeup to make the basic sulphates,1and this must bedetermined by analysisjand calculation.

Whenlarg'e quantities .of sulphates are present in the phosphaticmaterial and a comparatively small proportion of stick is used, a largerpercentage of carbonateof lime will standing until.

be necessary than when less sulphates and rock-t0 the action of acomparatively high degree of heat, otherwise there will not be acoagulation of the stick, so as to produce a stable dry granulatedcompound suitable for the trade. Ordinary acidified rock obtained bytheusnal treatmeiit'with sulphuric acid will not coagulate stick andproduce a dry granurated material. 4

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, isr l A fertilizer consisting of anietaphosphate prepared by submitting acidified rock to the action of ahigh degree of heat, as described, and stick loaded with about fifteenper cent. of carbonate of lime mixed together and described.

J OSEPH' VAN RUYMBEKE.

Witnesses;

CARRIE FEIGEL,

A. M. BEST.

granulated, substantially as

